Round and rectangular
Round models are designed for round ducts, while rectangular models are for ducts of the corresponding shape.
Ventilation equipment
Duct fans
Installed in ductwork, these fans move air through supply, exhaust, and supply-and-exhaust ventilation systems.
- For different duct typesRound and rectangular designs
- For different operating modesSupply, exhaust, and reversible operation
Moving air through the system
A duct fan is installed in a duct run. Air flows to the impeller, whose rotation generates pressure and moves the airflow further through the system. The operating mode can be maintained by an automation system or speed controller. These units are used in supply, exhaust, and supply-and-exhaust systems in buildings of various types.
Equipment design
Duct fan construction
Depending on the design, the unit comprises a casing, an impeller, and an electric motor. A terminal box or control system is provided for connection and operation; the design may also include vibration isolators and mounting hardware.
The casing shape matches the duct: round models are installed in round ducts, while rectangular models are installed in rectangular ducts. When selecting a fan, consider the system parameters and the conditions at the installation location.
For buildings with duct systems
Duct fans are used in commercial, public, and industrial spaces. The specific design is selected according to the building’s purpose and ventilation parameters.
- 01Offices and administrative buildingsFor organizing air exchange in work areas and shared spaces.
- 02Shops and shopping centresFor supply and exhaust sections of a ventilation system.
- 03Warehouses and logistics complexesFor moving air through ducts in warehouse spaces.
- 04Industrial premisesEquipment is selected according to operating conditions and project requirements.
- 05Restaurants and cafésFor ventilation systems in food service establishments.
- 06Residential complexes and hotelsFor air exchange systems in residential and hotel buildings.
Discuss your project with a specialist
Submit a request to tell us about your building and ventilation system. A Klimatrade specialist will help identify the information needed for equipment selection and answer your questions.
Working across all of Kazakhstan
Design options
Types of duct fans
Select a design based on the duct’s shape and purpose, the required operating mode, and the operating conditions.
Supply and exhaust
Supply fans deliver air into the system, while exhaust fans remove it from the space being served.
Reversible
Designed to operate in both directions when this mode is required for the application.
Asynchronous or EC motor
The motor type affects control options: EC models support stepless speed adjustment.
Special designs
Explosion-proof and heat-resistant options are considered for the relevant operating conditions.
How the fan works
The impeller moves air, while the selected operating mode helps the ventilation system perform according to the project requirements.
- 01Air intake
Air travels through the duct and reaches the impeller.
- 02Generating pressure
The impeller’s rotation creates both negative pressure and positive pressure.
- 03Moving the airflow
The airflow accelerates and continues through the duct.
- 04Maintaining the operating mode
An automation system or speed controller maintains the selected operating mode, where provided by the system.
Equipment selection
We consider your system parameters
For a preliminary selection, prepare information about the ductwork, required airflow and static pressure, acceptable noise level, and operating conditions.
- It is also important to consider the temperature and humidity of the air being moved, access to the equipment for maintenance, and the preferred method of speed control.
Practical ventilation solutions
Duct fans are installed directly in the ductwork. A range of casing shapes and designs is available to suit the system configuration and operating mode.
Compact installation
Installing the unit in the duct helps integrate it into the ventilation system.
Choice of casing shape
Round or rectangular designs can be selected to match the ductwork.
Different air exchange modes
The range includes supply, exhaust, and reversible options for different applications.
Adjustable operation
EC models offer stepless speed adjustment; for other designs, the control method depends on the model and system.
Convenient maintenance
The design should provide access for equipment inspection and cleaning.
Project support
Support from selection to delivery
Klimatrade supplies climate control equipment through professional partners, design organizations, and installation companies. Our team helps with technical questions and selecting a solution for your project.
- Technical consultations, assistance for designers and engineers, preparation of technical and commercial proposals, and technical support are available. Deliveries are arranged from warehouses in Almaty and Shymkent; warranty service is provided through service partners.
Duct fans in Kazakhstan
Duct fans are used in ventilation systems for offices, retail premises, warehouses, industrial facilities, hotels, and food service establishments. Equipment selection takes into account the duct shape, required airflow and static pressure, acceptable noise level, and operating conditions. If you are planning to select a duct fan for a site in Almaty, Astana, Shymkent, or another city in Kazakhstan, Klimatrade specialists can help clarify the initial requirements, consider a suitable design, and prepare a technical and commercial proposal. Availability and delivery terms are confirmed upon request.
Frequently asked questions about duct fans
What is a duct fan?
A unit installed directly in the duct to move air through a ventilation system.
What is the difference between round and rectangular models?
They are designed for ducts of the corresponding shape. Rectangular models can be useful when installation height is limited.
Can the fan speed be adjusted?
EC models support stepless adjustment. The adjustment options for other designs depend on the motor, model, and control system used.
How noisy is a duct fan?
Noise levels depend on the series, rotational speed, and system operating point. This parameter is considered alongside the requirements of the space when selecting equipment.
How do I select a fan for a site?
Consider the airflow, static pressure, duct type and cross-section, noise level, and temperature and humidity of the air being moved.
What maintenance is required?
It is recommended to periodically check the mountings and electrical connections, and clean the impeller. The required maintenance depends on the model and operating conditions.
How can I check availability and delivery?
Availability of standard models and delivery terms for special designs or batches can be confirmed upon request.
Contact Klimatrade
Let’s discuss ventilation for your site
Tell us about your project and system parameters. Our specialists will help identify the information needed to select a duct fan.